diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 370e541ed69..8cd18f7cc63 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,7 +43,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-14, windows-latest]
-        rust-version: ["1.70", stable]
+        rust-version: ["1.72", stable]
       fail-fast: false
     env:
       RUSTFLAGS: -D warnings
@@ -82,7 +82,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-14, windows-latest]
-        rust-version: ["1.70", stable]
+        rust-version: ["1.72", stable]
       fail-fast: false
     env:
       RUSTFLAGS: -D warnings
diff --git a/Cargo.toml b/Cargo.toml
index 736523639aa..d1c5ec29f44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,6 +22,9 @@ members = [
 ahash = "0.8.7"
 guppy-workspace-hack = "0.1.0"
 
+[workspace.package]
+rust-version = "1.72"
+
 [patch.crates-io.guppy-workspace-hack]
 path = "workspace-hack"
 
diff --git a/README.md b/README.md
index 36250daa3fc..4ef4680fe8b 100644
--- a/README.md
+++ b/README.md
@@ -86,7 +86,7 @@ metadata`](https://doc.rust-lang.org/cargo/commands/cargo-metadata.html) format.
 
 ## Minimum supported Rust version
 
-The minimum supported Rust version (MSRV) is **Rust 1.70**.
+The minimum supported Rust version (MSRV) is **Rust 1.72**.
 
 While a crate is pre-release status (0.x.x) it may have its MSRV bumped in a patch release. Once a crate has reached
 1.x, any MSRV bump will be accompanied with a new minor version.
diff --git a/guppy-summaries/Cargo.toml b/guppy-summaries/Cargo.toml
index 5aaa73adaef..b3aca25b50c 100644
--- a/guppy-summaries/Cargo.toml
+++ b/guppy-summaries/Cargo.toml
@@ -19,7 +19,7 @@ exclude = [
     # Readme template that doesn't need to be included.
     "README.tpl",
 ]
-rust-version = "1.70"
+rust-version.workspace = true
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/guppy/Cargo.toml b/guppy/Cargo.toml
index b240e4aac48..4bfc6a8a38f 100644
--- a/guppy/Cargo.toml
+++ b/guppy/Cargo.toml
@@ -19,7 +19,7 @@ exclude = [
     # Readme template that doesn't need to be included.
     "README.tpl",
 ]
-rust-version = "1.70"
+rust-version.workspace = true
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/target-spec-miette/Cargo.toml b/target-spec-miette/Cargo.toml
index 70faa174ee9..b99357ae3f7 100644
--- a/target-spec-miette/Cargo.toml
+++ b/target-spec-miette/Cargo.toml
@@ -9,7 +9,7 @@ readme = "README.md"
 keywords = ["cargo", "targets", "platforms", "miette"]
 categories = ["development-tools"]
 edition = "2021"
-rust-version = "1.70"
+rust-version.workspace = true
 
 [dependencies]
 target-spec = { version = "3.0.1", path = "../target-spec" }
diff --git a/target-spec/Cargo.toml b/target-spec/Cargo.toml
index 713373f7beb..30340e0b2b2 100644
--- a/target-spec/Cargo.toml
+++ b/target-spec/Cargo.toml
@@ -10,7 +10,7 @@ readme = "README.md"
 keywords = ["cargo", "targets", "platforms", "os", "cpu"]
 categories = ["development-tools", "parser-implementations"]
 edition = "2021"
-rust-version = "1.70"
+rust-version.workspace = true
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/target-spec/README.md b/target-spec/README.md
index 5aa59fd3a0a..961f5d452fa 100644
--- a/target-spec/README.md
+++ b/target-spec/README.md
@@ -56,7 +56,7 @@ For more advanced usage, see `Platform` and `TargetSpec`.
 
 The minimum supported Rust version (MSRV) is:
 * For target-spec 3.0.x: **Rust 1.66**.
-* Unreleased: **Rust 1.70**.
+* Unreleased: **Rust 1.72**.
 
 Within the 3.x series, MSRV bumps will be accompanied by a minor version update.
 
diff --git a/target-spec/src/lib.rs b/target-spec/src/lib.rs
index 24071c7e54c..0f8b01d34c4 100644
--- a/target-spec/src/lib.rs
+++ b/target-spec/src/lib.rs
@@ -50,7 +50,7 @@
 //!
 //! The minimum supported Rust version (MSRV) is:
 //! * For target-spec 3.0.x: **Rust 1.66**.
-//! * Unreleased: **Rust 1.70**.
+//! * Unreleased: **Rust 1.72**.
 //!
 //! Within the 3.x series, MSRV bumps will be accompanied by a minor version update.
 //!
diff --git a/tools/cargo-hakari/Cargo.toml b/tools/cargo-hakari/Cargo.toml
index ad72cc1f489..50cbf3e889b 100644
--- a/tools/cargo-hakari/Cargo.toml
+++ b/tools/cargo-hakari/Cargo.toml
@@ -15,7 +15,7 @@ keywords = [
     "guppy",
 ]
 categories = ["development-tools::cargo-plugins"]
-rust-version = "1.70"
+rust-version.workspace = true
 
 [dependencies]
 camino = "1.1.6"
diff --git a/tools/determinator/Cargo.toml b/tools/determinator/Cargo.toml
index 20f53a8f5ce..4549ac2ade9 100644
--- a/tools/determinator/Cargo.toml
+++ b/tools/determinator/Cargo.toml
@@ -22,7 +22,7 @@ include = [
     # Include default rules with the package.
     "default-rules.toml",
 ]
-rust-version = "1.70"
+rust-version.workspace = true
 
 [dependencies]
 ahash.workspace = true
diff --git a/tools/hakari/Cargo.toml b/tools/hakari/Cargo.toml
index 38b58809cd5..68809a7d063 100644
--- a/tools/hakari/Cargo.toml
+++ b/tools/hakari/Cargo.toml
@@ -15,7 +15,7 @@ keywords = [
     "guppy",
 ]
 categories = ["development-tools"]
-rust-version = "1.70"
+rust-version.workspace = true
 
 [package.metadata.docs.rs]
 all-features = true